Cupola-furnace.



PATENTED DEC. 24, 1907.

M. ZiPPLER.

. GUPOLA FURNACE. APPLICATION PIL ED MAR- 13, 1907.

- FIG. 1

SSES. W

v kg 9%? V INVFNTOR.

. MIOHAELZIPPLER, F ALLEGHENY, PENNSYLVANIA.

CUPOLA-FURNACE.

No. 874,476. d

Specification of Letters Patent.

Patented De'o. 24, 1907.

Application filed March 13.1907. seen No. 362,206

To all whom it may concern:

Be it known that I, IroHAEL ZIPPLER, a resident of Allegheny, in thecounty of Allegheny and State of Pennsylvania, have invented a newanduseful Improvement in CupolaFurnaces; and I do hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to cupolafurnaces, and has special reference to theformation of linings in such furnaces, such as is shown in LettersPatent N 0. 638,541 granted to me on ing.

As is illustrated and described in said pat 'December 5th,1899.

The object of my invention is to provide a simple and efiicient liningfor such furnaces in which alarger amount of air can be fed to thefurnace through said lining than is ordinarily provided and withoutweakening the furnace or said lining, andastill further object of theinvention is to provide for a more even and better distribution of theair-fed to the furnace.

My invention consists, generally stated, in the novel arrangement,construction, and combination of parts, as hereinafter more specificallyset .forth and described and particularly ointed out in the claims.

To one le others skilled in the art to which my invention appertains toconstruct and use-my improved cupola furnace, I will de: scribe the samemore fully, referring to the accompanying'drawing, in which v Figure 1is a vertical central section of the base portion of, a cupola-furnaceshowing my invention applied theretol' Fig. 2 is a crosssection of thesame on the line 2 2. Fig. 1 andlooking in the directionof the arrows.

,Fig. 3 is a side elevation of a portion of the furnace showing a partofthe same broken away on the line 3-3 Fig. 1 and. looking in thedirection of the arrows. Fig. 4 is a perspective view of one of theair-boxes employed.

Like symbols or reference herein indicates like parts in each of-thefigures of the drawout the cupola-furnace is shown at Aiand is providedwith the ordinary sheeting or casing 1 for inclosing the lining 2, whichis generally formed. of fire bricks and of the same general -thicknessof walls throughout the length or height of the furnace. The casing 1and lining' 2 of the furnace A are'builtiup from the bottom plate 3,which rests u on columns 4 and extend down to the groun or floor of thefoundry ormill for supportlng said furnace. The bottom plate 3 has-anopening 5 therein whichis closed by doors 6 hinged at the side of saidplate and such doors form the bottom or base of the furnace Aforsupporting the material within the same and permitting the withdrawalof said material Within'the furnace after the heat or when desired. Atthe bottom of thefurnace A and adjacent to the plate 3 is the ordinarytop-hole 7 which ex tends through the casing 1 andlining 2 and isadapted to draw off the molten metal from the interior of the furnace.

In the present constructionthe lining 2 is built up from the bottomplate 3 for a short.

distance 'of uniform thickness to form the wall portion 30f the .liningand' upon this wall is secured the lower'metal ring 9 formed ofsegmental plates or sections. Resting upon the ring 9 are a series ofmetal blocks 10 which are placed around said ring so as to form spacesor, main flues 11 between them and the space or annular this 12 betweenthe rear of the blocks 10 and the casing 1 for the circulation of air tothe interior of the furnace A through air pipes 13 opening into the flue12 from the main blast pipe 14 located on the exterior of andsurrounding the said furnace. These blocks 10 are provided with teriorcurved line of the ring 9, and are aiso formed with the recesses 16' onthe rear of the same for more properly distributing the air from the airpipes 13 tothe interior of the furnace. Another metal ring 17 formed incurved faces 15, which correspond to the in segmental plates or sectionsis laid or seame upon the blocks 10 for supporting the metal bricks ofplates 18 which rest by theirbottom faces on the said ring and aretapered on their sides to form a rick or plate of keystone or Wedgeshapefor insertion to form the circular metal lining 19 at this point. Theplates of bricks 1-8 have their front faces 20 inclined upwardly andinwardly toward the center of the furnace and if desired their rearfaces 21' can be recessed for the purpose of decreasing the weight ofthe-same. Upon the top faces of the blocks 10 is the upper metal ring 22which is formed in segmental plates or sections and supports the fripor- Above iis projecting portion 23 the lining 2 extends backward andupward -at an incline,

'lining2 portion 23 up to the to of the furnaceA.

Extending up from t e flues 11 and 12 are the auxiliary flues 26 whichlead into the furnace A through and ,within the lining 2 and projectingportion 23 thereof, and theseflues 26 are formed of the metal boxes 27built Within said lining and against the casing 1.

from the lining 2, so that it to the ground or floor.

These boxes form compound twyers and are preferably in two sections toprovide for the ='vertical and the substantially horizontal anddownwardly inclined passage ways 28 and 29 respectively for forming saidfiues. The boxes 27 are provided with the open side 30 which fitsagainst the casing 1 to form the passage-way 28, and the passage-way 29is also provided with an open top-31 which is closed by the cover ortop-plate 32 fitting over said top and held within the passageway 29 bythe strips 32 on said plate. The vertical section 33 of the boxes 27 forthe passageway 28 is preferably provided with the rojection 34 at theupper end of the same fbr forming a seat 35, within which seat theend'of'the inclined twyer section 36 of said boxes are adapted to fitand be held in place by bolts or pins 37 passing through the same.

In the operation of my improved cupola-' furnace A the material formelting the metal is placed upon the doors 6 in the ordinary manner andsuch material extends up to the top ofthe; lining 24 Where the metal tobe melted is placed. The fire having been started within the furnace Athe air from the blast pipe 14.wili pass into the flue 12 and thenceinto the furnace A'through the fiues 11 and 26 which will cause themetal to melt and run down the lining 24 through'the material to thebottom of said furnace and away from the said fiues l1 and 26 where itcan be drawn off through the top-hole 7. After the metal has been drawnofi through the tophole 7, the doors 6 can be opened and the ma terialleft within the furnace A will be free can be dropped It will thus beseen that my improved cu Ola-furnace construction is cheap and e cientwhen installed and practical experience has proven that it will preventthe clog- "ging of the furnace and the running of the metal into the airflues, thereby prolonging the life of the lining and the furnace andthus saving labor, time, and expense in the operation of these furnaces.It will also be seen that the use and shape of the such lining willprevent the cinder, metal, etc. from adhering thereto, as in theordinary brick-lining, and so do away with all liability of the breakingor chipping of the same during the cleaning purpose intended. By havingthe twyer portion formed separate from the vertical portion of theair-boxes the said twyer portion and cover can be easily :and quicklyre- .moved from the lining in the case of their burning out and new onesinserted, while the inclining of said twyer portions will prevent anyashes or other material entering the same and clogging them up.

Various modifications and changes in the design and: construction. of myimproved cupola-furnace may be resorted to Without departing from thespirit of the invention or sacrificing any of its advantages.

What I claim as my invention and desire to secure by Letters Patentis+ 1. A cupola-furnace having a casing, a lin- 8 ing within said casingformed with an inwardly projecting fire-brick or clay portion at thebase thereof and having air supply flues leading through said lininginto said furnace below said projecting portion, and com-' pound tWyersin said lining and against said casing having air supply fluesconnecting said first named fines and leading up from the same and intothe furnace through-said projecting portion. I j

2. A cupola-furn'ace having a casing, a lining within said casing formedwith an inwardly projecting fire-brick or clay portion at the basethereofand having air supply fiues leading through said lining into saidfurnace below said projecting portion, and compound tw-yers in saidlining and against'said casing having a vertical air supply fiueconnecting said first named fines and leading up from the same and ahorizontalair supply flue connecting said vertical flue and leading intosaid furnace through said projecting portion.

3. A cupola-furnace having its lining formed with an inwardly projectingfire-brick or clay portion at the base thereof and having air supplyflues leading up through said lining and into the furnace below saidprojecting portion, and compound twyers in said lining and against saidcasing having a vertical passage-way. leading up from said first namedfiues and a horizontally inclined passageway connecting said verticalpassageway and leading into the furnace through said projecting portion.

4. A ci1pola-furnace having a casing, a lining formed with an inwardlyprojecting firebrick or clay portion at the base thereof and having airsupply flues leading through said lining into the furnace below saidprojecting portion, and compound twyers in said lining and against saidcasing formed of metal fiue boxes for connecting said lines and having asaid projecting portion.

5. A cnpola-furnace having its lining formed with an inwardly projectingfire-brick or clay portion at the base thereof and having air supplylines leading through said lin ing into the furnace belowsaidfprojeoting portion, and metal flue boxes connecting said fiues andformed of a Vertical portion and a substantially horizontal tw'yerportion leading into the furnace through said projecting portion andsaid twyer portion being removably connected to said vertioal portion.

6. A cupola-furnace having its lining formed with an inwardly irojeotingfire-brick I or clay portionat the base thereof'and having air supplyfines leading through said lining into the furnacebelow said projecingportion, and metal flue boxes connecting said flues and formed of avertiealportion and a substantiallyhorizontal twyer portion leading intothe furnace through said projecting portion, said twyer portion beinginclined toward the interior of said furnace and being reinovablyconnected to said vertical portion. In testimony whereof, I the saidMioHAEL ZIPPLER have hereunto set my hand.

ll IICHAEL ZIPPLER. v Witnesses:

J. N. Cooicn' 7 JAMES. L. WEHN.

